Merge pull request #1497 from HyeockJinKim/ne

Add __ne__ methods

tests/snippets/builtin_range.py

@@ -58,6 +58,12 @@ assert range(2) == range(0, 2)
 assert range(0, 10, 3) == range(0, 12, 3)
 assert range(20, 10, 3) == range(20, 12, 3)
 
+assert range(10).__eq__(range(0, 10, 1)) is True
+assert range(10).__ne__(range(0, 10, 1)) is False
+assert range(10).__eq__(range(0, 11, 1)) is False
+assert range(10).__ne__(range(0, 11, 1)) is True
+assert range(0, 10, 3).__eq__(range(0, 11, 3)) is True
+assert range(0, 10, 3).__ne__(range(0, 11, 3)) is False
 #__lt__
 assert range(1, 2, 3).__lt__(range(1, 2, 3)) == NotImplemented
 assert range(1, 2, 1).__lt__(range(1, 2)) == NotImplemented

tests/snippets/floats.py

@@ -229,3 +229,34 @@ assert float('nan').hex() == 'nan'
 # Test float exponent:
 assert 1 if 1else 0 == 1
 
+a = 3.
+assert a.__eq__(3) is True
+assert a.__eq__(3.) is True
+assert a.__eq__(3.00000) is True
+assert a.__eq__(3.01) is False
+
+pi = 3.14
+assert pi.__eq__(3.14) is True
+assert pi.__ne__(3.14) is False
+assert pi.__eq__(3) is False
+assert pi.__ne__(3) is True
+assert pi.__eq__('pi') is NotImplemented
+assert pi.__ne__('pi') is NotImplemented
+
+assert pi.__eq__(float('inf')) is False
+assert pi.__ne__(float('inf')) is True
+assert float('inf').__eq__(pi) is False
+assert float('inf').__ne__(pi) is True
+assert float('inf').__eq__(float('inf')) is True
+assert float('inf').__ne__(float('inf')) is False
+assert float('inf').__eq__(float('nan')) is False
+assert float('inf').__ne__(float('nan')) is True
+
+assert pi.__eq__(float('nan')) is False
+assert pi.__ne__(float('nan')) is True
+assert float('nan').__eq__(pi) is False
+assert float('nan').__ne__(pi) is True
+assert float('nan').__eq__(float('nan')) is False
+assert float('nan').__ne__(float('nan')) is True
+assert float('nan').__eq__(float('inf')) is False
+assert float('nan').__ne__(float('inf')) is True

tests/snippets/none.py

@@ -18,3 +18,9 @@ assert none() is none2()
 assert str(None) == 'None'
 assert repr(None) == 'None'
 assert type(None)() is None
+
+assert None.__eq__(3) is NotImplemented
+assert None.__ne__(3) is NotImplemented
+assert None.__eq__(None) is True
+assert None.__ne__(None) is False
+

vm/src/obj/objfloat.rs

@@ -179,20 +179,39 @@ impl PyFloat {
         PyFloat::from(float_val?).into_ref_with_type(vm, cls)
     }
 
+    fn float_eq(&self, other: PyObjectRef) -> bool {
+        let other = get_value(&other);
+        self.value == other
+    }
+
+    fn int_eq(&self, other: PyObjectRef) -> bool {
+        let other_int = objint::get_value(&other);
+        let value = self.value;
+        if let (Some(self_int), Some(other_float)) = (value.to_bigint(), other_int.to_f64()) {
+            value == other_float && self_int == *other_int
+        } else {
+            false
+        }
+    }
+
     #[pymethod(name = "__eq__")]
     fn eq(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyObjectRef {
-        let value = self.value;
         let result = if objtype::isinstance(&other, &vm.ctx.float_type()) {
-            let other = get_value(&other);
-            value == other
+            self.float_eq(other)
         } else if objtype::isinstance(&other, &vm.ctx.int_type()) {
-            let other_int = objint::get_value(&other);
+            self.int_eq(other)
+        } else {
+            return vm.ctx.not_implemented();
+        };
+        vm.ctx.new_bool(result)
+    }
 
-            if let (Some(self_int), Some(other_float)) = (value.to_bigint(), other_int.to_f64()) {
-                value == other_float && self_int == *other_int
-            } else {
-                false
-            }
+    #[pymethod(name = "__ne__")]
+    fn ne(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyObjectRef {
+        let result = if objtype::isinstance(&other, &vm.ctx.float_type()) {
+            !self.float_eq(other)
+        } else if objtype::isinstance(&other, &vm.ctx.int_type()) {
+            !self.int_eq(other)
         } else {
             return vm.ctx.not_implemented();
         };

vm/src/obj/objnone.rs

@@ -111,6 +111,24 @@ impl PyNoneRef {
             Err(vm.new_attribute_error(format!("{} has no attribute '{}'", self.as_object(), name)))
         }
     }
+
+    #[pymethod(name = "__eq__")]
+    fn eq(self, rhs: PyObjectRef, vm: &VirtualMachine) -> PyObjectRef {
+        if vm.is_none(&rhs) {
+            vm.ctx.new_bool(true)
+        } else {
+            vm.ctx.not_implemented()
+        }
+    }
+
+    #[pymethod(name = "__ne__")]
+    fn ne(self, rhs: PyObjectRef, vm: &VirtualMachine) -> PyObjectRef {
+        if vm.is_none(&rhs) {
+            vm.ctx.new_bool(false)
+        } else {
+            vm.ctx.not_implemented()
+        }
+    }
 }
 
 pub fn init(context: &PyContext) {

vm/src/obj/objrange.rs

@@ -14,7 +14,7 @@ use crate::vm::VirtualMachine;
 use super::objint::{PyInt, PyIntRef};
 use super::objiter;
 use super::objslice::{PySlice, PySliceRef};
-use super::objtype::{self, PyClassRef};
+use super::objtype::PyClassRef;
 
 /// range(stop) -> range object
 /// range(start, stop[, step]) -> range object
@@ -239,30 +239,43 @@ impl PyRange {
         }
     }
 
+    fn inner_eq(&self, rhs: &PyRange) -> bool {
+        if self.length() != rhs.length() {
+            return false;
+        }
+
+        if self.length().is_zero() {
+            return true;
+        }
+
+        if self.start.as_bigint() != rhs.start.as_bigint() {
+            return false;
+        }
+        let step = self.step.as_bigint();
+        if step.is_one() || step == rhs.step.as_bigint() {
+            return true;
+        }
+
+        false
+    }
+
     #[pymethod(name = "__eq__")]
-    fn eq(&self, rhs: PyObjectRef, vm: &VirtualMachine) -> bool {
-        if objtype::isinstance(&rhs, &vm.ctx.range_type()) {
-            let rhs = get_value(&rhs);
-
-            if self.length() != rhs.length() {
-                return false;
-            }
-
-            if self.length().is_zero() {
-                return true;
-            }
-
-            if self.start.as_bigint() != rhs.start.as_bigint() {
-                return false;
-            }
-            let step = self.step.as_bigint();
-            if step.is_one() || step == rhs.step.as_bigint() {
-                return true;
-            }
-
-            false
+    fn eq(&self, rhs: PyObjectRef, vm: &VirtualMachine) -> PyResult {
+        if let Some(rhs) = rhs.payload::<PyRange>() {
+            let eq = self.inner_eq(rhs);
+            Ok(vm.ctx.new_bool(eq))
         } else {
-            false
+            Ok(vm.ctx.not_implemented())
+        }
+    }
+
+    #[pymethod(name = "__ne__")]
+    fn ne(&self, rhs: PyObjectRef, vm: &VirtualMachine) -> PyResult {
+        if let Some(rhs) = rhs.payload::<PyRange>() {
+            let eq = self.inner_eq(rhs);
+            Ok(vm.ctx.new_bool(!eq))
+        } else {
+            Ok(vm.ctx.not_implemented())
         }
     }